Now that you know AdTran supports NetFlow, you need an AdTran NetFlow Analyzer. With the implementation of the Integrated Traffic Monitoring feature in AOS products, AdTran takes network traffic monitoring to a new level. You just need the right NetFlow reporting tool.

Our NetFlow application provides an incredibly high level of AdTran NetVanta NetFlow data analysis capability. It allows you to: Read more »

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Let’s talk about NetFlow observation point in Cisco NetFlow capable devices, particularly the octetDeltaCount collection. Ingress and egress Netflow  are probably notions we are the most familiar with. However, what exactly is Ingress or Egress NetFlow? At what point were  bandwidth utilization values in my NetFlow report metered?

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The Sonicwall NetFlow Analyzer supports not only most industry standard IP flow protocols such as sFlow, jFlow, NetFlow, Flexible Netflow, and IPFIX, but it also specializes in sonicOS NetFlow reporting. It is, in my opinion, the best way to get the most out of SonicOS NetFlow.

Besides the traditional flow octets delta count, source and destination ports and source and destination IP addresses; SonicWALL brings more to the table. SonicWALL NetFlow support was introduced in SonicOS 5.8. Some benefits include network planning and monitoring, application and user monitoring, security analysis and more. Read more »

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It is nice to see calls on Juniper IPFIX support start to roll in. The other day I had a customer call in who was seeing unexpected DSCP values in our netflow network traffic analyzer, many of them were “23456”. This raised the question whether somehow the traffic analysis tool was not deciphering AS numbers correctly or whether it was a Juniper IPFIX problem.

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Today I would like to discuss IP host monitoring with NetFlow. Often times, network administrators need to monitor activities of a particular host on a network during a specific period of time. In this blog I intend to show how this can be accomplished in practice.

A true NetFlow, IPFIX, or Flexible NetFlow Analysis software is equipped with the ability to filter traffic on a specific host or a subnet permitting the admin to determine:

• IP addresses or subnets the host is communicating with
• The utilized bandwidth
• Protocols associated with the host’s traffic
• Applications this host is using

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A few Flexible NetFlow tips and tricks could give you a new network traffic analysis perspective! Flexible Netflow is the latest improvement to the Cisco IOS Netflow technology. Most Cisco articles call it the next generation in flow technology. It “provides enhanced optimization of the network infrastructure, reduces costs, and improves capacity planning and security detection beyond other flow based technologies available today.” Here are a few great things that Flexible NetFlow can bring to the table.

A. Its configurable flow information allows the user to perform customized traffic identification and the ability to focus and monitor specific network behavior. This feature is key to network infrustrature optimization. For example, when there is high flow volume, the user can choose to enable flow sampling or export only certain traffic information.

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NetFlow v5/v9, Flexible NetFlow and IPFIX are the most popular IP flow formats. In this blog I would like to briefly talk about each of them, so that this information will allow you to better take advantage of everything flow technology has to offer. Features that could change your network traffic analysis experience forever.

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In this blog I want to talk about enabling NetFlow on a VMware ESX. Netflow support has now been added to vSphere 5; by configuring your virtual switch to send NetFlow statistics to a netflow Analyzer you gain visibility into your virtual infrastructure. To be more specific, you will be able to monitor:

• VM to VM traffic on the same host
• VM to VM traffic on different hosts
• VM to devices outside the virtual environment.

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Vyatta NetFlow has been improved in some of the latest VC 6.x releases. I worked on a NetFlow reporting issue with a VC 6.0 user in the past trying to figure out why his NetFlow Analyzer was not showing the expected amount of traffic. We used Wireshark and found that a large number of flow packets were being exported without flow data, therefore were useless and discarded by the collector. Since he upgraded to VC 6.2, he was able to see all his traffic. Vyatta now supports MAC addresses, as seen in the image below! Read more »

Visit our website to download a 30 day trial of Scrutinizer

Join the NetFlow Developments group on LinkedIn.

Visit our website to download a 30 day trial of Scrutinizer

Join the NetFlow Developments group on LinkedIn.